Photographic-roll-film cartridge.



T. BAKER.

PHOTOGRAPHIC ROLL FILIVI CARTRIDGE.

APPLICATION FILED DEC.30| i916.

Patented June Il. N318.

By 5%. M4

L. LL.

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g pointed out in the the and of che sped-Lisa ik@ -l'a,wng@: uw l i. pms catlfdge constructed 40 and illustmt 35 features bein my i ambo d" HUGE the the ai; 6, ad

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m1 view o gaf In mg one imei' o? )rear and of Fig". @is an ed@Y p l, an gq-ig; 3 is an. enar.

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which 1 sired. rIhe result is that after the film has been unWound in use and its length exposed= the rear end is held in its original position instead ot being free to creep and in freeing it, the sticker apt to be so damaged as to maire it unsuitable 'for its intended use at the proper point.

.In the practice of my invention, I avoid these annoyances by making the sticker 5 A posed in the roll beneath the area 6 and preferably not in the same sector of the roll s0 that there is no opportunity' for the moisture to be communicated from the re gion 6 through the next convolution of the paper backing 2 lying beneath to the gummed portion 8 of the sticker.

`In Fig. 3 I have illustrated on a large scale the relative positions of the areas 6 and 8 in the roll, the former being shown just as it is about to be convoluted during the rolling process. The. sector A indicates the distribution of the gunnned portion 8 of the sticker about the roll which is seen to be on the opposite side of the latter from the pasted portion 6.

The gunnned area 8 would probably be sufficiently protect-ed if lying in the same sector or directly beneath the pasted area A (S if one or more convolutions of the several strips intervened but this would -involve making the pastor unnecessarily long and?N the arrangement shown in Fig. 3 4is a surer preventive.

I claim as iny invention:

1. In a photographic ilm cartridge, the combination With a backing and a sensitive lm strip Wound together into .a roll, of a i sticker pasted to the inner end of the film strip and having a gulnmed portion adapted for attachment to the backing, the said gumined portion being radially oii'set from the pasted portion at the end of the film strip' in the superposed convolutions of the roll `and the inner surface of the portion of the backing lying next beneath the pasted portion being disposed against an ungummed surface.

2. In a .photographic film cartridge, the combination With a backing and a sensitive hn strip Wound together into a roll, of al THOMAS BAKER.

Witnesses:

,.G. VAN DYNE, O. J. WORTH 

